USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2026-01-09/00 UTC MPAS cell scale: 2.4 km FCST UTC UTC T Td Altim Spd Gust Dir Grid VVV RH1RH2RH3 T1T2T3 ACCUM HR DAY HR (C) (C) (in Hg)(kts)(kts)(deg)(deg) (*) (% wrt water) (C) (*) 0 09 00 -10.1 -13.4 28.79 2 2 9 207 000 68 57 49 -10-10-11 000 1 09 01 -10.6 -14.5 28.79 3 4 8 206 000 78 59 51 -10-10-11 000 2 09 02 -10.7 -14.2 28.80 3 3 4 202 000 81 57 50 -10-10-10 000 3 09 03 -10.8 -14.2 28.80 3 3 8 206 000 82 56 50 -10-10-10 000 4 09 04 -11.0 -13.7 28.81 3 3 6 204 000 87 55 49 -10-10-10 000 5 09 05 -11.7 -13.9 28.81 3 3 6 204 000 89 55 49 -10-10-10 000 6 09 06 -12.4 -14.7 28.82 3 3 7 206 000 90 54 48 -10-10-10 000 7 09 07 -13.0 -15.6 28.81 3 4 9 208 000 88 54 49 -10-10-10 000 8 09 08 -13.2 -16.0 28.82 3 5 8 206 000 88 55 48 -10-10-10 000 9 09 09 -13.7 -16.5 28.84 4 6 3 202 000 88 56 48 -10-10-10 000 10 09 10 -13.8 -16.5 28.84 3 6 348 187 000 90 59 49 -10-10-10 000 11 09 11 -14.1 -16.4 28.84 4 6 347 185 000 93 62 49 -10-10-10 000 12 09 12 -14.4 -16.2 28.85 4 7 340 178 000 97 65 50 -10-10-10 000 13 09 13 -14.6 -15.9 28.86 5 7 335 174 000 101 68 50 -10-10-10 000 14 09 14 -14.8 -15.6 28.87 6 9 333 171 -001 109 72 50 -10-11-10 000 15 09 15 -13.8 -14.1 28.90 7 9 329 168 -001 114 71 52 -10-10-10 000 16 09 16 -13.1 -13.3 28.91 5 7 314 153 000 113 77 53 -10-11-11 000 17 09 17 -11.7 -12.0 28.91 5 12 313 151 001 111 91 54 -10-11-11 000 18 09 18 -10.8 -11.6 28.91 4 12 314 153 000 106108 54 -10-11-12 000 19 09 19 -10.2 -10.9 28.93 4 7 339 177 000 105107 56 -10-11-12 000 20 09 20 -8.8 -10.3 28.94 5 10 339 178 000 95110 55 -10-11-13 000 21 09 21 -8.3 -10.1 28.95 6 11 359 197 001 93 99 59 -9-10-12 000 22 09 22 -8.5 -9.7 28.96 6 9 6 205 000 99 97 73 -9-10-11 000 23 09 23 -8.1 -9.1 28.97 6 10 13 211 001 99 94 85 -9 -9-11 000 24 10 00 -7.3 -8.3 28.98 6 10 10 209 -001 98 89 93 -8 -9-11 000 25 10 01 -6.7 -8.2 28.99 7 9 0 198 001 94 89115 -8 -9-10 000 26 10 02 -6.6 -7.9 29.00 8 10 5 203 -002 96 86114 -8 -8-10 000 27 10 03 -6.7 -7.7 29.00 8 9 3 201 000 98 90110 -8 -8-10 000 28 10 04 -6.5 -7.5 29.01 7 10 10 208 -001 98100114 -8 -8 -9 002 29 10 05 -6.7 -7.4 29.02 8 11 11 209 -001 101102113 -8 -9 -9 007 30 10 06 -6.7 -7.4 29.03 7 9 16 214 000 100102102 -8 -8 -9 001 31 10 07 -7.9 -8.0 29.04 6 8 30 228 000 108 98 99 -8 -8 -9 000 32 10 08 -7.6 -7.9 29.04 5 8 27 225 001 106 99104 -7 -8 -9 001 33 10 09 -7.2 -7.4 29.05 4 8 13 212 -001 107105105 -8 -8 -9 001 34 10 10 -7.0 -7.2 29.05 6 7 355 193 -007 105 99108 -7 -8 -9 003 35 10 11 -9.9 -10.4 29.06 4 9 333 172 002 109 89 98 -7 -8 -9 000 36 10 12 -10.8 -11.2 29.07 5 8 340 179 -001 110 84101 -7 -8-10 000 37 10 13 -11.4 -11.9 29.08 5 7 342 180 000 111 77 97 -7 -8 -9 000 38 10 14 -11.6 -11.8 29.09 5 10 335 174 000 111 81 94 -7 -8 -9 000 39 10 15 -8.9 -9.1 29.09 7 9 348 186 001 109 81100 -7 -8 -9 000 40 10 16 -8.6 -8.8 29.09 7 9 355 194 000 108 79 87 -8 -8 -9 000 41 10 17 -8.6 -8.8 29.09 6 10 4 203 000 108 72100 -8 -8 -9 000 42 10 18 -8.6 -8.7 29.09 7 11 1 199 000 108 80 94 -8 -8 -9 000 43 10 19 -7.9 -8.0 29.09 7 10 2 201 -001 107 90 94 -8 -8 -9 000 44 10 20 -7.4 -7.5 29.09 8 10 358 196 000 107 97101 -8 -9 -9 000 45 10 21 -7.0 -8.3 29.10 8 9 8 206 000 96 85 89 -8 -9 -9 000 46 10 22 -6.6 -8.3 29.10 6 8 14 212 000 92 89 92 -8 -9 -9 000 47 10 23 -6.6 -7.2 29.10 7 7 18 216 -003 101104 94 -8 -9 -9 000 48 11 00 -6.5 -7.8 29.09 5 5 10 208 -003 96109 97 -8 -9 -9 000 49 11 01 -6.6 -8.1 29.09 4 5 4 202 -001 94109 94 -8 -9 -9 000 50 11 02 -6.5 -7.6 29.08 3 4 20 218 000 97109 91 -8 -9 -9 000 51 11 03 -6.6 -7.8 29.07 2 2 69 267 000 96109 96 -8 -9 -9 000 52 11 04 -6.9 -8.4 29.06 3 4 103 301 000 94 98 97 -8 -9 -9 000 53 11 05 -7.6 -8.9 29.05 3 5 105 303 000 96 87 94 -8 -9 -9 000 54 11 06 -8.5 -9.3 29.04 4 6 93 291 000 103 83 91 -8 -8 -9 000 55 11 07 -9.4 -9.8 29.02 5 7 100 298 001 108 87 87 -8 -8 -9 000 56 11 08 -9.8 -10.0 29.01 4 8 100 299 001 109 87 87 -8 -8 -9 000 57 11 09 -10.9 -11.4 29.00 5 9 101 300 000 110 87 84 -8 -9 -9 000 58 11 10 -11.3 -11.8 28.99 6 8 104 302 000 110 83 81 -8 -8 -9 000 59 11 11 -11.6 -12.1 28.97 6 8 109 308 000 110 81 82 -8 -9-10 000 60 11 12 -11.6 -12.1 28.95 6 8 117 316 000 110 79 80 -8 -9-10 000 61 11 13 -12.2 -12.6 28.93 7 11 122 321 000 112 81 76 -8 -9-10 000 62 11 14 -11.5 -11.7 28.92 8 13 119 317 000 111 77 74 -7 -9-10 000 63 11 15 -10.2 -10.4 28.90 10 15 117 316 000 110 78 72 -8 -9-10 000 64 11 16 -10.1 -10.3 28.89 10 16 120 318 000 110 76 69 -8 -9-10 000 65 11 17 -9.8 -10.0 28.87 11 16 122 320 000 110 76 66 -8 -9-10 000 66 11 18 -9.4 -10.1 28.85 11 16 125 323 000 104 82 59 -8 -9-10 000 67 11 19 -8.9 -10.1 28.84 12 17 122 321 -001 99 80 52 -8 -9-10 000 68 11 20 -8.5 -9.5 28.82 13 19 119 317 -001 99 78 47 -8 -9-10 000 69 11 21 -8.5 -9.5 28.81 13 20 118 316 000 99 77 55 -8 -9-10 000 70 11 22 -9.5 -10.1 28.80 14 21 117 315 -002 105 75 51 -8 -9-10 000 71 11 23 -9.6 -9.7 28.79 17 24 117 315 -003 110 74 49 -9 -9-10 000 72 12 00 -8.4 -8.5 28.77 19 27 115 313 -003 108 89 40 -10 -9-10 000 73 12 01 -8.0 -8.3 28.76 20 28 115 313 -003 106 80 37 -9 -9-10 000 74 12 02 -8.2 -8.8 28.75 20 28 112 311 -003 104 78 35 -9 -9-10 000 75 12 03 -7.8 -8.8 28.74 21 28 107 305 -006 99 97 44 -9-10-10 000 76 12 04 -8.4 -9.5 28.72 22 30 108 307 -004 99 73 43 -9 -9 -9 000 77 12 05 -8.7 -9.7 28.72 22 31 103 302 -007 100 71 33 -9 -9 -9 000 78 12 06 -9.0 -10.0 28.71 22 32 103 301 -006 100 64 60 -9 -9 -8 000 79 12 07 -9.3 -10.2 28.70 22 31 103 301 -009 102 57 96 -9 -8 -7 000 80 12 08 -9.1 -9.3 28.70 20 26 106 304 -008 109 85 95 -9 -7 -7 001 81 12 09 -8.9 -9.3 28.70 18 22 108 306 -007 106100 97 -9 -7 -7 009 82 12 10 -8.9 -9.6 28.70 16 19 107 305 -009 104102 96 -8 -7 -8 015 83 12 11 -8.9 -9.8 28.70 13 16 104 303 -006 101105 98 -7 -7 -7 021 84 12 12 -8.5 -9.2 28.70 12 15 95 293 -007 103107 99 -7 -7 -7 018 85 12 13 -7.3 -7.7 28.70 9 13 85 283 -007 104107 93 -6 -7 -7 000 86 12 14 -6.4 -6.8 28.69 10 13 74 273 -003 103107 83 -6 -6 -7 001 87 12 15 -6.5 -6.6 28.70 10 14 68 266 000 106107 80 -6 -6 -6 001 88 12 16 -6.4 -6.5 28.70 10 15 63 261 000 106 98 83 -6 -6 -6 001 89 12 17 -5.6 -5.6 28.71 9 14 46 245 000 105 98 83 -6 -6 -6 000 90 12 18 -5.1 -5.1 28.71 10 13 41 239 -001 105100 79 -6 -6 -6 000 91 12 19 -4.5 -5.0 28.72 10 12 31 230 -003 100107 77 -6 -7 -6 000 92 12 20 -4.9 -4.9 28.73 6 9 40 238 -004 105 98 75 -6 -6 -7 000 93 12 21 -4.6 -4.7 28.74 4 10 42 240 -002 103 82 84 -6 -5 -6 000 94 12 22 -4.1 -4.9 28.74 6 11 76 274 -002 97 79 94 -5 -5 -6 000 95 12 23 -4.2 -4.2 28.75 9 13 88 287 000 104 92103 -5 -6 -7 000 96 13 00 -3.9 -5.2 28.75 12 14 88 286 -001 92107104 -5 -6 -7 000 97 13 01 -4.0 -5.3 28.75 10 13 90 289 -001 92100100 -5 -6 -7 000 98 13 02 -3.7 -5.4 28.74 11 14 95 293 -002 89 98105 -5 -6 -7 000 99 13 03 -3.7 -5.1 28.75 11 15 98 296 -001 91 96109 -5 -5 -7 000 100 13 04 -3.7 -4.6 28.75 11 14 106 304 -002 96100105 -5 -5 -6 000 101 13 05 -4.0 -4.3 28.75 11 14 113 312 -001 102104110 -5 -5 -6 000 102 13 06 -3.4 -3.6 28.75 11 15 115 314 -001 101101110 -4 -5 -6 001 103 13 07 -2.9 -3.4 28.75 10 12 113 311 -002 99103109 -4 -5 -6 006 104 13 08 -3.3 -3.8 28.75 11 15 94 293 000 99 96104 -4 -5 -6 019 105 13 09 -3.6 -3.7 28.75 12 15 57 255 000 103104104 -4 -5 -6 019 106 13 10 -4.0 -4.4 28.76 11 14 49 247 -002 101102 88 -5 -6 -7 003 107 13 11 -4.4 -4.6 28.76 7 11 40 239 -003 103101 82 -5 -6 -7 001 108 13 12 -4.4 -4.5 28.77 5 9 75 274 000 104106108 -5 -6 -7 000 109 13 13 -4.8 -4.8 28.77 7 11 95 294 -004 104106110 -5 -6 -7 013 110 13 14 -4.9 -5.0 28.77 9 11 75 273 -005 105106108 -5 -6 -7 026 111 13 15 -5.0 -5.1 28.78 9 11 55 254 -005 105106 95 -6 -6 -7 021 112 13 16 -5.0 -5.1 28.78 8 11 64 262 -003 105104 93 -6 -7 -7 009 113 13 17 -4.9 -5.0 28.78 8 12 63 262 -002 104103 90 -6 -7 -7 006 114 13 18 -4.8 -4.9 28.78 9 12 66 264 -001 104102 93 -6 -6 -7 009 115 13 19 -4.7 -4.9 28.78 9 11 65 263 -001 103105 93 -6 -6 -7 007 116 13 20 -4.2 -4.7 28.79 9 10 54 252 000 99105 94 -5 -6 -7 008 117 13 21 -3.9 -4.5 28.79 8 9 40 239 -002 99104 90 -5 -6 -7 011 118 13 22 -3.6 -4.6 28.80 6 7 38 237 -002 95 94111 -5 -6 -7 005 119 13 23 -3.2 -4.4 28.80 5 5 40 238 -003 93105110 -4 -6 -7 002 120 14 00 -3.3 -4.2 28.80 7 7 36 234 -001 95106110 -4 -6 -6 006 * NOTES on units: VVV (vertical velocity) is given as tenths of a microbar per second at 700 hPa, with positive values indicating upward motion; ACCUM (accumulated precipitation, past 3h) is given as hundredths of a millimeter; RH1, RH2, and RH3 are the % RH at the surface, 1000', and 3000', respectively; T1, T2, and T3 are the temperatures at 500', 1000', and 1500', respectively. Gust is estimated according to the NCEP HRRR gust algorithm.